Mechanical movement



( ModeL) 3 Sheets-Sheet 1 T. BEACH.

MECHANICAL MOVEMENT.

No. 524,371. Patented Aug. 14, 1894.

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T. BEACH. MECHANICAL MOVEMENT.

No. 524,371. Patented Aug. 14, 1894.

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T BEACH. MECHANICAL MOVEMENT.

No.-5.Z4,371. Paten ted Aug. 14, 1894.

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THOMAS BEACH, or FREEPORT, PENNSYLVANIA.

MECHANICAL MOVEMENT.

SPECIFICATION forming part of Letters Patent No. 524,371, dated August 14, 1894.

ppli i n filed May 19 1893. Serial No. 474,810- (No model.)

To all whom it mag concern.-

Beit known that I, THOMAS BEACH, of Freeport, in the count-y of Armstrong and State of Pennsylvania, have invented a new and useful Improvement in Mechanical Movements, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is an end elevation of my improvement as applied to a steam engine. Fig. 2 is a side elevation of the same, partly in vertical central section. Fig. 3 is an enlarged top plan view of the triple crank and attachments. I 5

Fig. 4 is a front view of the rotatory disk; and Fig. 5 is a sectional viewon the line V-V of Fig. 4. Fig. '6 is a front view of a modified form of face plate; and Fig. 7 is a top plan view of the same with the triple crank. Fig. 8 illustrates a third form of face-plate.

Like symbols. of reference indicate like parts in each.

rangement of parts as hereinafter more fully described, and set forth in the claims.

In the drawings, 2 indicates the frame of a vertical direct-acting engine, having seats 3, 3, to which are bolted vertical guides 4, 4. Within these guides is mounted the crosshead 5 of a piston-rodfi connected to the piston 7 of a steam-cylinder 8 having the usual steam-chest 9. Secured to the ends of a wristpin 10 passing through the cross-head are two cranks 11 and 12 having wrist-pins 13 and 14: respectively, which are pivoted in the lower ends of the fulcrumrods15, these fulcrumrods being pivoted at their upper ends upon short shafts 16 projecting from lugs 17 secured to the steam cylinder 8. To the outer end of the wrist-pin 13 is secured a third or actuating crank 18, upon a projecting portion in the form of a short shaft 19 projecting from which crank are pivoted two segmental pinions 20 and 21 intermeshing with two short racks 22 and 23 secured upon opposite sides of the radial slot in the disk 24; (Figs. etand 5). The slide-valve is operated through the lever-system 25, 26 and 27, and when steam is admitted to the cylinder, the reciprocatory motion of the cross-head causes a rotation of the cranks and an oscillatory motion of the rods 15.

In the modification of Fig.8, the third crank.

18 is pivoted to a link 31, which is pivotally connected to the disk, thus doing away with the slot or groove in the disk. I show in Fig. 1 a fly-wheel 32 secured to the driven shaft, but this may be dispensed with if desired.

The advantages of my invention result from the greater leverage obtained upon the disk, since the point of application of power thereto is removed a greater distance from its center, thus lengthening the lever-arm at the time that the admission valve is opened, and the greatest pressure is applied. The construction is comparatively simple and compact, and a much more efficient device is attained than heretofore.

It will be understood that although I have shown my invention as applied to a steam engine, it is equally useful in any location where reciprocatory motion is to be convertedinto rotary motion, and I desire to cover its use in all such connections.

The rotation of the crank 18 causes the shaft 19 to move in an elliptical path By the word guideway in the claims, I

intend to cover a recess whether it takes the form of a groove or extends through the plate.

Many variations other than those shown may be made in the form and arrangement of the parts without departure from my invention as defined in the claims.

I claim- 1. In a device for converting reciprocatory into rotary motion, the combination with the oscillatory fulcrum rods, of the substantially.

parallel cranks pivoted therein, the actuating crank projecting from the wrist-pin of one of the parallel cranks, and a projection upon said crank arranged to move in an elliptical path, an independently pivoted disk, and an operative connection between the projection and disk; substantially as described.

2. The combination with the oscillatory ful crum-rods, of the substantially parallel cranks pivoted therein, the actuating crank projecting from the wrist-pin of one of the parallel cranks, a disk having a guide-way, and a block connected to the actuating crank and movable Within said guideway; substantially as described.

3. The combination with the oscillatory fulcrum rods, of the substantially parallel cranks pivoted therein, the actuating crank projecting from the wrist-pin of one of these parallel cranks, a shaft upon the actuating crank provided with segmental pinions, and a disk havrods, a crank pivoted therein, and an actuating crank connecting the same with the movable block; substantially as described.

In testimony whereof I have hereunto set my hand.

THOMAS BEACH. Witnesses:

W. B. OoRWIN, H. M. OoRWrN. 

